My humble sharing. An early 90's Ciocc made from Genius tubing. Genius was one of the last old school tube set before Columbus started introducing the modern and current series such as the Xcr, Spirit etc. Claim to be around 1,600g for a medium size frame in differential shape triple butted with wall thickness as low as 0.4mm in select areas.
If you prefer old school steel frame, perhaps consider to look out for Columbus Genius, EL or Nemo tubing. They were mostly made in the early 90's around the time when carbon tubing start becoming the norm.
